Chapter 5 Thermocouple Input Module (XBF-TC04S,TC04B)
5.4 Installation and Wiring
5.4.1 Installation environment
Although the device can be installed with high reliance regardless of installation environment, attention
should be paid to the followings in order to secure the reliance and stability of the system.
(1)
Environmental Conditions
(a) Install on a water-proof and dust-proof control board.
(b) Place free of continuous impact or vibration.
(c) Place not directly exposed to direct sunrays.
(d) Place where dew does not form due to rapid temperature change.
(e) Place where ambient temperature is maintained between 0 - 55℃.
(2)
Installation Construction
(a) In case of screw hole processing or wiring construction, wiring dregs should not go into PLC.
(b) Install on a position easy to access.
(c) Should not install on the same panel which high voltage device is installed on.
(d) It should be 50mm and longer distant from duct and modules.
(e) Should ground in the environment where is not interrupted from noise.
(f) Install not to contact with cooling pan in the panel
(3) Cautions in handling
It describes caution in handling from unpacking module to installation.
(a) Do not fall or apply excessive impact on it.
(b) Never attempt to separate PCB from the case.
(c) Make sure that any impurities including wiring dregs should not go into the upper part of
module during wiring work.
(d) Never attempt to attach or detach the module when it is turned on.
5.4.2 Wiring
(1) Cautions in wiring
(a) Do not place AC power line close to the AUX signal line of the module. To avoid surge or
induced noise occurring from AC, make sure to leave a proper space.
(b) Cable should be selected by considering ambient temperature and allowable current and the
specification of cable should be as follows.
(c) If cable is placed too close to any heating device or materials or if it directly contacts oil and
similar materials for a long time, it may cause short-circuit, resulting in breakdown and
malfunction.
(d) Check the polarities during terminal strip wiring
(e) Wiring with high voltage cable or power line may cause induction problem, causing malfunction
or trouble.
(f) External DC24V power should be same with power of XGB. If external DC24 V power of
thermocouple input module is turned on/off while power of XGB main unit is on, temperature
input value may have an error.
(g) Thermocouple input module may use 4 types of thermocouple sensors. (K / J / T / R)
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